Denshin Denrei Denwa
- Media type
- Film
Denshin Denrei Denwa · Electrical Telegraphy, Electric Bells and Telephones · MOVIE
About this title
When copper wire is wrapped around an iron rod and connected to a battery, it becomes an electromagnet. A science teaching material movie that explains the principle and structure of electric bells and telephones by applying the principle of an electromagnet through a fusion of live action and animation.